Billiard ball clock



FIG. 1 is a front view of the billiard ball clock of the invention;

FIG. 2 is a side view of the billiard ball clock of the invention;

FIG. 3 is a top plan view of the billiard ball clock of the invention;

FIG. 4 is a bottom view of the billiard ball clock of the invention;

FIG. 5 is a back view of the billiard ball clock of the invention; and,

FIG. 6 is a cross-sectional view illustrative of the billiard balls and numbers of the billiard ball clock taken along the line 6—6 of FIG. 1. 

The ornamental design for a billiard ball clock, as shown and described. 